Spring compressor and carrier-holding tool



Nov. 16 1926.

D. C. FEATHER SPRING COMPRESSOR AND GARRIER HOLDING. TooL Filed April 24,

Nov; 16 1926. 1,607,153

D. C. FEATHER SPRING COMPRESSOR AND CARRIER HOLDING TOOL Filed April 24, 1924 z sheets-sheet 2 Patented Nov. 1e, 1926,.v

vunirse stares narratore-ical.

nAvID` o. FEATHER, or FORT SPRING COMPRESSOR AND 'CARRIER-HOLDING TOL.

Application filed April 2'4, 1924. Serial No. 708,710.1'-

This .invention relates to improvements in spring removers and appliers, and particularly embodies a spring compressor and carrier holding' tool which is of `unique structure in itself, and functions in a materially improved ina-nner, as will hereinafter appear.

One of the objects of my invention has been to devise a simple, durable and effective tool, adapted for substantially all analogous conditions relating to the removal and replacement of coil springs generally,

which tool is of a self-guiding and centenY ing double movable jaw type, for leverage engagement with both'endA portions ofthe coil spring, in bridged or straddled gripping relation, so that' said end portionsare caused to be compressed towards the cen-v tral portion, whereby the improved tool not only functions as a compressor means, for` the spring, but also serves as a carrier hold- Vparent as incidental to the following disclosure, land with these lprefacing remarks, therefore, reference will now be immediately had to the accompanying drawings, illustrating practicalembodiments of the improvements, although not essentially the only ones, and the application o-f the improved toolvin certain relations, in which drawings- Figure 1 is a top plan view of one form of the improved tool; [QFigure 2 is a view of the same, shown in closed up position in full lines, partly in side elevation and partly in vertical longitudinal section, along the line 2 2 of Figure 1, the opened out positions ofthe parts being yalso shown in dotted outline;

- Figures Sand 4 are local transverse crosslsectional views taken alongthe lines V3 and 4, respectively, of Figure 2; l

MORGAN, ooLoRAno, Assrenoa'ro IRA J'. CLARK, 'or v DENVER, oo LoaADo. ,Y n i Y l Figure 4a isa fragmentary top Vplan view7 y of ya slightly modified structure;V

Figures 5 an`d6 illustrate the application l of the tool,..respectively inpartially opened and closedl positions, to. oneJ character of poppet valve mountings, common to some typesof automobile engines; and

Figure 7 illustrates the application the tool to another Vform of poppet valve mountings, common to other types'of automobile engines, and frequently termedv valve-in-thefheadf construction, the left v side of the view also illustrating the appli*- cation of an auxiliary equipment element, Whichmay or may not be combined vwith thetool.

`Referring first' more particularly to Fig'-l ures 1 to 4, vthe Vnumerals 10 and 11 designate upper and lower handle members,

respectively, which may be suitably shapedV longitudinally and transversely, and being preferablyy of lchanneledV construction for lightness, the said` handle members being crossed and pivoted together intermediately, as Yat 12, and providing forwardly ,diss posed jaw extensionsor yarms 13 and 14.

The numerals 15 andf16 designate the effective tool jaws, v which at their outer eX- tremities are provided with the outwardly opening complementary slots 17 and 18, and their inner ends being -pivotally connected., in positive ornon-slidable relation, to their complementary operating handles 10 and 11', as at 19and 20, rearwardly of the'pivotf val means 112' yfor the crossed handles, theV pivotal elements 19 and 20'p'referably being in the nature of `aXis pins, having one of their ends threaded for vscrewthreaded attachment and their other end provided with a milled yhead 21, whereby theljaws may readily be attachedand detached, as will be obvious, for transposition or lreplacement purposes. Y 1

As shown, these jawsmay embodyflat blanks provided Awith marginally inturne-d longitudinal flanges 22, which flanged construction, although not atall essential, is'l more especiallyv Vdesirable with reference to the modified type of Figure 4a, and the inner non-sl-idablex` or positive pivotal lconnections with the handles may *be providedl for-by the spaced ears 23. The inside faces of the outer extremities of the jaws may be provided with outwardly opening semi-circular seats 24 and 25, with the inner faces of the latter grooved, as at 26, for snugly seating a coil ofthe spring or its cupped washer, and for `seating such cupped washer, one of the saidv seats may be of greater diameter than the other, the drawings showing the seat 25 as being of greater diameter than the seat 24. This actual form of seating means, however, is not strictly essential, and is not shown as being employedy with the modilied structure ofA Figure 4a. The tip ends 27 of the jaws may preferably converge slightly towards eachother, for facilitatingv the guiding and centeringof the jaws relatively to the coil spring to be gripped thereby.

The forward portions of the `jaws 15-16, rearwardly kof their slotted ends, are slidingly connected to the forward ends of the lever armextensions l-la of the pivoted handle members. Although this is an important feature of my improved preferred construction, it is nevertheless.v obvious that these sliding connections may be; accomj plished; in varied ways.

For several reasons, however., including a facile manner for atta-chino' andl detachinoV the jaws relatively totheir supporting handles and extension lever arms, l have foundl Y it to be avery simple and expedient arrangement to provide narrow apertures or slots 28 and 29, extending longitudinally ofthe jaws, adapted to freely receivevangularly disposed necks or shanlrs 30 and 31 formed at the ends of the lever arms 13--14, which necks or. shanls are suitably headed or terminate inicross-lugs 32v and 33, and: at their joinder with the lever arms 18-14 they form the shoulder portions 34, suitably spaced by the neclr portions from the cross-lugs.

The cross-lugs `in assembly are adaptedto be disposed, across the slots, transversely of thefouter faces of the jaws, andtheshoi'ilder portions 34Cv are analogouslydisposed to project transversely of the inner facesthereof, the arrangement thus forming a sliding interloclrv between the aws and 'their` lever arms. y f j It will be noted that thewidth of these cross-lugs 3238 is less while their length is greater than the width of the slots 28-29, sothat in attaching or detaching the Vjaws 15--16, by holding them at right angles to the lever arms 13-14, the said cross-lugs may be passed through their complementary slots 28-29, but they will provide. for a sliding interlock or connection when the jaws j are disposed longitudinally ofthe lever arms and are pivota-lly connected at their inner endsto the handles at 19 and20'. In operation, therefore, the effect is that, when the handles10-11 Vare operated'to- Wards each other, the axis pins 19 and 20 function as swinging fulcrums to push the inner ends of the jaws towards each other, while the cross-lugs 32-33 function as sliding fulcrums to pull the outer kends of the jaws towards each other,the movements thus being made uniform and maintaining thev substantial parallelism of the jaws at all times. ln the reverse movements,fthe swinging fulcrums exert a pulling force on the inner ends of the aws, while the sliding shoulders 3/1 exert an opening pushing force on the outer end portionsthereowf.

Any suitable resilient means may be interea, a modified means being shown at Figure;

4a, this loclring feature is simply illustrated by a pivotally-hung ratchet, or toothed, bar 36, operating in a manner which is obvious.

Also, at 37, there is shown apivotally hung hooi7 element, whichmay or may not be employcd` as combined with the tool proper,

and the functioning of' which willv hereinafter appear. Y Y c Allk of these elements 35,. 36' andij are housed by the channeled! handle members, and suitable means may be employed, illustrated by the wire springs 38 and 39, for holding the elements 36 andr 37 in theirv folded up positions.

ln the structure Vshown at Figure 4, the slight modification relates to the seating means or limiting stops for the coil spring to be handledv with the tool, substitutedl for the equivalent seating means21l` and 25 ofthe other views, and it also relates to a modied Ymeans for locking the parts in any 'adjusted position,-which latter feature orits equivalent, although only shownv in connection with Figure 4ta, may in fact be used with all forms ofthe tool. n

ln this view l have shown a pairV of inwardly project-ed shouldering lipsY or lugs 4G, to replace the seats 2li-#25, which,V lugs may be conveniently formed by slitting'the jaw plates to providea tonguethat isrbent over to project inwardlyof the jaw, leaving the aperture l-l, although such lugs could be formed inother ways, andthey function to` provide abutments against which adjacent coils of the spring engage.

'On the other hand, the lugsrllOlcould-be' dispensed `with and a single vcentral lug 4t2 formed, which would cooperate with the marginal flanges 22, at the forward ends of the jaws, to provide engaging abutments `with the tool for the adj acent coils of the spring, the lug 42 resultingfrom bending over, and clipping off if too long, the tongue formed by slitting the YAjaw plate to provide the slot 28; However, instead of clipping off a portion of this `tongue 42, the Alonger tongue 'could itself be slit centrally andlongitudi nally, for a limited distance from its free end, and its separated sections curved laterally, in opposite directions, to provide.. semiannular seats, more analogous to the Vseat-` ing means 24-25, the foregoing applying top the'lower jaw 16 also. f v

43 indicates a locking cam disk `eccentrically'pivoted, as at 44, adjacently'of the inner end of one of the slots 28 or 29, which disk is provided with an operating part or knob'45, an edge face cam surface 46 and a suitably cut-away edge face portion47. At Figure 4a, the position ofthe crossl'ug 32 indicates that the jaws have been moved to almost their extreme closed-up positions. If now the camV disk 43 be partially rotated in clockwise direction, the Vcam face 46 will vbe moved into wedgingV engagement with the angular shank 30, or the neck between the arm 13 and its crosslug 32, so that the jaws willbe held locked in thatl position, until the cam disk is ro' tated in a reverse direction, as will be obvious, and the object of. they recessed face 47 is to provide clearancekfor. the shank 30,' when the jaws are movedto their full open positions.- As ammatter of fact, however,

the-Ycut-away portion of the disk could beV of larger or smaller dimensions, if desired, than `that actually shown by the recessed portion 47. Y

- Figures 5 and 6 are fragmentary views of valve spring thereof; whereas Figure 7 isl an analogous view roughly illustrating a cylinder head 49 with the so-called valvein-'the-headW'ty-pe of valve mountings, and

applied in two different relations. Y

Both of these constructionsembody a poppet valve 50, with a retaining pin 51 through the end of its stem opposite the valved head, a coil valve spring 52 encompassing said stein, betweenv said` pin and an Vabutment face of the motor bodyand a cupped washer 53 foi'seating the' spring end adjacent thesaid retainingpin. v In the constructions of Figures 5 and 6, the valve is actuated byl acam operated push rod directly supporting the vstem ofthe valve, but in the, valvediilhead type of Figure 7, the vertical disposition of the stemmed valve is reversed, with the valve-head down and the cupped washer uppermost, so Vthat the;V valve lis actuated, by

means of a rocker bar 'mounted on a shaft,

as at`54,l one arm 55 of the rocker bar engagingthe valve stein, while the other'arm 56 thereof isY engaged by areciprocating rod v57 that is actuated by a supporting cam op-V erated push bar 58, and-all of which is fully understood. l

' In employing the tool in connection with the valve mountings of Figures 5 and 6, and withv particular reference to the tool jaw construction of 'Figures l and 2, and the same principles being involved Slightly'modiedform of Figure 4a, it will be seenthat the jaws 15-16 may be caused to gripthe spring 52 in bridging or spanning relation, withthe larger seating Ameans 25 snugly receiving the cupped washer 53.

in the and with the smaller seating means 24 snugly receiving the'coil at the other end of the spring, although the kend of the jaw15` compressed in a truly axial direction and,

therefore, without any tendency towards buckling, because the outer ends of the jaws do not have arcuate movement, as do the outer ends -of the lever arms 13-14, but` the jaws are bodily moved in'continuing substantial parallelism, owing to the pivotal .sie Y connection of their rear ends to theliandles equivalent thereof holding'the partslocked in their adjusted positions, `it will be ap-y parent tliatthe spring 52 itself will be lirinly held iii-its compressed state,` sogthat the tool functionswas a carrier .supportV therefor, either in operations.`

removal or assembling The tool Vfunctions in ananalogous manner with reference to the@valve-iii-,li'eadl` type of constructionv Vof, Figure 7,A exceptingl that in this case the jaws l5- 16 haveV been ics taken off and replaced y in transposed posii Vtions,rthe jaw l6being now. lpivoted to the upper handle l0 and slidingly connected with the 'lever arm `13, while the Yjaw"l5 is likewiseassociated with the'handle 1l and lever arm 14, so that the larger seating ineans.25 'stillfieceives the cupped washery 53, or its equivalent, which isnow located reference Vto the. valve mounting, andl this view` also illustrates `the uppermost with adaptability of the smaller."seatingiiieans 24 for snugly receiving aceil of the spring 5A2that is not necessarily anveiidl coil.

Of; course, separate tools could be made and. marketed'. for specidic. use'- in connection with the different. types of valve mount-y ings, but, as.. a matter of fact, I aim` to.- sup-v ply separate setsy of paired jaws of. differenttypes and dimensions, for interchangeablepuiposes with an, individual crossed-handles unit,onev set of which may be takenV offand replaced by another setas desired.,

Also, atthe left side of Figure 7., l have illustrated. the functioning ofthe pivota-lly hung hook: member 37, when it is desired tol combine it withthe improved tool, this hook! member being designedv to elevate the left armV 561. of' the rocker bar, against the pressure of the valve spring 52011 i-s other arm 55, whereby the actuating rod 57 may be facilely removed,"fromA association. wit the push bar 58- and rocker arm 56, a task that is diicult toA accomplish without thel use of some such elevating tool.

Although: lV have thusV fully disclosed the improvements, it willi nevertheless be understood that li donot Vrestrict myself to all of the details exactly as disclosed, except-ing as they may come within. the terms of the claims, or equivalent elements or combinations t-hereof, or as fairly interpreted inr the light of the specification if; necessary, for it is obvious that alterations may be made vwithout departing from the spirit of the invention. lfo instance, as l have heretofore stated, varying forms of'seatingmeans may be *providedv for by the jaws toreceive Vthe engaged coils of' the springs or cupped washer, and varying forms .ofl locking means may Ybe employed Afor iolding the parts at any'adjusted position.

What l do claim, as new and` patentable, is

l'. In a. coil spring compressor and carrier holding'tool embodying` crossed arms,"with a pivotal connection therebetween, for-ming a pair of rearwardly rprojected operating handles, relatively to said pivotal connection, andforwardlycontinuing jaw engaging levers, the combination of' a pair of spaced bodily movable and detachable jaws longitudinally straddlingsaid pivotal connection, the forward end of each of said levers and of eachl of saiddetachable jaws being provided with coacting means for slidingly connecting the same, when longitudinally disposed in complementary relation, while also providing for the facile attaching and detaching of each ofy said detachable jaws when disposed inappropriate angular relation, and pivotal means for detachably connecting the rear end of each of said jaws,

in non-slidable relation, to its complementary one of said-operating handles.

. 2. ln a coil spring compressor and carrier holding tool, the combination of a supportingunit, forl the aws of'the tool, embodying crossed arms, with a pivotal connectionY neer/1,1153

tary relation, andi also providing for the facile attaching and det'achingl of Veach ofl said detachable jawswhen disposed in ap.-J propri'ate angular relation, and pivotal means for detachablyv connecting the rear vendI of each of. said aws, in nonslidable relation,y to its complementary one ofsaid operating handles.

3; ln a coil spring compressor. and! carrier holding tool embodying" crossedi arms, :with a pivotal connection therebetween, forming a pair of rearwardlyprojected operating handles,. rela-tivelyl to said pivotal connection, and forwardly continuing jaw engag- A ing levers, the combination of a pair of .spaced bodily movable jaws, longitudinally straddling said. pivotal connectionv andI so 'connected totheir complementary said handles a-ndIlevers-as to cause approximately parallel closing and opening movements of saidl jaws concurrentlywith; the respective closing and opening movements of said handles, resilient means normally tending to open both said jaws and handles, and means for adjustably holding both saidjaws and handles against opening lmovements while *permitting of fiirtherA closing movements` of the same, whichy said means `embodies a ratchet bar pivoted at one end to one of said handles and at itsotherend eX- tendingv through -a coacting slot formed through said other handle.

d. ln a coilspring compressor an'dcarrier Vholding tool embodying crossed arms, with a pivotal connection therebetween, forming a pair of rearwardly projected? operating handles, relatively 'to said pivotal? connection, and forwardlyA continuingA jaw engagingv levers, the combination of a pair of spaced 'bodily` movable7 and detachable jaws longitudinallyv straddling said pivotal connection, the forward end ofeachV ofV Asaid levers and-each of said'detachable jaws being respectively` provided with shank and Vslot means for slidingly connecting the same,

when longitudinally disposed in s complemen'- tary relation, while also providing for the facile attaching and detaching of each ofl said detachable jaws when Adisposed in appropriate angular relation, pivotal: means forr` detachably connecting the rear-end of each of said jaws, in non-slidable relation, to which means'lembodies a i'atchet bar pivts complementary one of said handles Vesiloted at. one end to one of said handles and ient means normally tending to open both at its other end extending through a coaetl0 said jaws and handles, and means for ading slot formed through said other handle.

5 justably holding both said jaws andhandles In testimony whereof I affix my signature.`

against opening movements while permit; l l l L I f ting of further closing movements of same, DAVID C.' FEATHER. 

